Download - MSP430 - SPI_74HC595
Transcript
1. SPI INTERFACE
2. REGISTERS
3. 74HC595
4. SAMPLE CODE
USCI Serial Protocols
• SPI • Serial Peripheral Interface
• Single Master/Single Slave
SPI Master
SPI Slave
SCLK
MOSI
MISO
I2C • Inter-Integrated Circuit Interface
• Single Master/Multiple Slaves C Master
DAC Slave
ADC Slave
C Slave
R R
SCL SDA
Vdd
UART • Universal Asynchronous
Receiver/Transmitter
• Full duplex
R/T R/T
Tx Rx
Rx Tx
52
P1.5 P1.6 P1.7
𝑆𝑆
1 2 3 4
USI BLOCK DIAGRAM : SPI MODE
P1.5
P1.6
P1.4
USICNT REGISTER
USICTL0: USI CONTROL REGISTER 0
USICTL1: USI CONTROL REGISTER 1
USICKCLT: USI CLOCK CONTROL REGISTER